Learn How to Use an Intermezzo: Tactical Refutation
This puzzle shows a classic intermezzo in the Queen's Gambit Declined: a forcing move appears in the middle of a tactical sequence and changes the evaluation immediately. The key idea is that checks and captures can override a seemingly active queen move when the opponent’s king is exposed and a piece is loose. In classical chess, these tactical refutations often win material by exploiting pins, skewers, and overloaded defenders rather than relying on slow positional play.